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\(\frac{4}{5}\cdot\frac{3}{x}\cdot\frac{2}{11}=\frac{24}{165}\)
\(\frac{3}{x}\) \(=\frac{24}{165}:\frac{2}{11}:\frac{4}{5}\)
\(\frac{3}{x}\) \(=1\)
\(x\) \(=3\)
\(\frac{4}{3}:\frac{x}{5}=\frac{5}{13}\cdot\frac{4}{9}\)
\(\frac{4}{3}:\frac{x}{5}=\frac{20}{117}\)
\(\frac{x}{5}=\frac{4}{3}:\frac{20}{117}\)
\(\frac{x}{5}=\frac{39}{5}\)
\(x=39\)
a } 4 / 5 x 3 /y x 2 / 11 = 24 / 165
= 4/5 x 2/11 x 3/y =24/125
=8/55 x 3/y=24/125
= 24/125:8/55
=33/25
\(a.\frac{4}{5}\times\frac{3}{x}\times\frac{2}{11}=\frac{24}{165}\)
\(\frac{3}{x}=\frac{24}{165}:\frac{4}{5}:\frac{2}{11}\)
\(\frac{3}{x}=1\)
\(\Rightarrow x=3\)
\(b.\frac{4}{3}:\frac{x}{5}=\frac{5}{13}\times\frac{4}{9}\)
\(\frac{4}{3}\times\frac{5}{x}=\frac{20}{117}\)
\(\frac{5}{x}=\frac{20}{117}:\frac{4}{3}\)
\(\frac{5}{x}=\frac{5}{39}\)
\(\Rightarrow x=39\)
Đúng nha
A) 4/5 * 3/x * 2/11 = 24/165 B) 4/3 : x/5 = 5/13 * 4/9
3/x = 24/165 : 2/11 : 4/5 4/3 : x/5 = 20/117
x = 3 : 1 x/5 = 4/3 : 20/117
x = 3 x = 7,8 * 5
x = 39
\(\frac{4}{5}\)x\(\frac{3}{x}\)x\(\frac{2}{11}=\frac{24}{165}\)
\(\Rightarrow\frac{4}{5}\)x\(\frac{3}{x}\)x\(\frac{2}{11}=\frac{8}{55}\)
\(\Rightarrow\frac{4}{5}\)x\(\frac{3}{x}\)= \(\frac{8}{55}\):\(\frac{2}{11}\)
\(\Rightarrow\frac{4}{5}\)x\(\frac{3}{x}\)=\(\frac{4}{5}\)
\(\Rightarrow\frac{3}{x}\)=\(\frac{4}{5}:\frac{4}{5}\)
\(\Rightarrow\frac{3}{x}=1\)
\(\Rightarrow\frac{3}{x}=\frac{3}{3}\)
\(\Rightarrow x=3\)
bài 4:so sánh
5/2 lớn hơn 3/7
4/3 lớn hơn,3/2 lớn hơn
bài 6:rút gọn các phân số sau:
3/9=1/3 9/12=3/4 8/18=4/9 60/36=10/6 17/34=1/2 17/51=1/3 35/100=7/20 25/100=1/4 8/1000=1/125 24/30=4/5 18/54=1/3 72/42=12/7
đay nhé mk chưa làm hết đc bn viết liền quá mk nhìn khó mà mk hỏi bài 7 là nhân hay cộng vậy?
`a)4/5:3/x xx2/11=24/165`
`(4/5xx2/11)xx 3/x=8/55`
`8/55xx3/x=8/55`
`3/x=8/55:8/55`
`3/x=1`
`3:x=1`
`x=3:1`
`x=3`
____________________________________________
`b)4/3:x/5=5/13xx4/9`
`4/3:x/5=20/117`
`x/5=4/3:20/117`
`x/5=39/5`
`x=39`
A) 4/5:3/x X 2/11=24/165
\(\dfrac{4}{5}:\dfrac{3}{x}X\dfrac{2}{11}=\dfrac{24}{165}\)
\(\dfrac{3}{x}=\dfrac{24}{165}:\dfrac{4}{5}:\dfrac{2}{11}\)
\(\dfrac{3}{x}=1\)
\(\dfrac{3}{x}=\dfrac{3}{3}\)
=> x=3
B) \(\dfrac{4}{3}:\dfrac{x}{5}=\dfrac{5}{13}x\dfrac{4}{9}\)
\(\dfrac{4}{3}:\dfrac{x}{5}=\dfrac{20}{117}\)
\(\dfrac{x}{5}=\dfrac{4}{3}:\dfrac{20}{117}\)
\(\dfrac{x}{5}=\dfrac{39}{5}\)
=> x = 39